JP5230706B2 - Force-sensitive light-emitting keyboard - Google Patents

Description

  The present invention relates to a keyboard, and more particularly to a force sensor type keyboard having a force sensor function.

  For example, computer input devices such as mice, keyboards, and trackballs are used as peripheral equipment for many computers. In particular, it is used for inputting characters and commands, and the keyboard is an indispensable device for many users. FIG. 1 is a schematic view showing the appearance of a conventional keyboard. There are a plurality of keys on the surface of a conventional keyboard, and these keys are classified into general keys 10, numeric keys 11, function keys 12, and the like. When these keys are pressed by a user with a finger, a corresponding signal is received. This causes the computer to perform the function of the pressed key. For example, the general key 10 is used to input a code such as an alphabetic alphabet, and the numeric key 11 is used to input a number. The function keys such as the F1 key to the F12 key are used for providing various functions.

  FIG. 2 is an electric circuit diagram showing an internal circuit of a conventional keyboard. The keyboard 1 includes a control unit 13 and a keyboard scan matrix 14. The control unit 13 is connected to an input / output port (I / O port) by a plurality of pins. Generally, the control unit 13 is a microprocessor. Details regarding this microprocessor are obvious to those familiar with this technology, and are not described here. The keyboard scan matrix 14 is combined by a plurality of input / output ports (X0 to X7 and Y0 to YG) intersecting each other, and is shown in FIG. The keyboard scan matrix 14 is an 8 × 16 matrix having 128 connection points and corresponding to a plurality of keys on the surface of the keyboard 1, that is, if there are 128 keys on the keyboard, the keyboard There must be at least 24 I / O ports inside.

  Along with technological innovations, there are some users who are not satisfied with a keyboard with a general basic function. For this reason, each keyboard manufacturer has developed a keyboard device having various functions, for example, it has a force sensor function. A force sensor type keyboard is also one of the conventional technologies. In the force sensor type keyboard, a force sensor module is added below the keys to detect the pressure pressed by the user, and the keys are set to a predetermined pressure. When the key is pressed at a pressure lower than a predetermined pressure, the force sensor type keyboard generates a first signal and causes the computer to execute a first command corresponding to the first signal. Further, when the key is pressed at a pressure greater than a predetermined pressure, the force sensor type keyboard generates a second signal, and causes the computer to execute a second command corresponding to the second signal.

  If the user wants to enter characters in a note, especially when the user presses a key (eg, A key) from a plurality of keys at a pressure lower than a predetermined pressure, A lowercase letter a is displayed corresponding to the input. When the user presses this key (that is, the A key) from a plurality of keys at a second pressure greater than a predetermined pressure, a capital letter A is displayed in response to the user's input on the text-based document. Is done.

  The force sensor type keyboard is very useful, but if the user is using a force sensor type keyboard for the first time or is not familiar with the force sensor type keyboard, is the pressure on the keyboard greater than the specified pressure? It is not possible to make a decision, that is, these users cannot determine which command on the computer the key they press has to make. For this reason, a force sensor type keyboard for identifying the magnitude of pressure is necessary.

  The present invention has been made in view of such conventional problems. In order to solve the above-described problems, it is a main object of the present invention to provide a force sensor type light emitting keyboard having a function of identifying the magnitude of pressure.

In order to solve the above-described problems and achieve the object, the force sensor type light emitting keyboard according to the present invention includes a base,
A plurality of keys that are positioned above the base and that are pressed by a certain pressure to output a signal;
A thin film switch circuit provided between a base and a plurality of keys, having a pressure detection circuit for detecting a corresponding pressure and generating a haptic intensity voltage;
A light emitting module provided between the base and a plurality of keys for generating the first beam and the second beam;
A control unit that is connected to the thin film switch circuit and the light emitting module, determines the pressure intensity based on the force intensity voltage, and causes the light emitting module to output the first beam and the second beam based on the pressure intensity; It is characterized by that.

According to the present invention,
A plurality of scan input lines, each scan input line having a first thin film circuit board having a scan low impedance connection point;
Superimposed on the first thin film circuit board and includes a plurality of scan output lines, each scan output line including a second thin film circuit board having a low impedance output connection point;
Here, a plurality of scan output lines together with a plurality of scan input lines form a keyboard scan matrix, each scan low impedance connection point and each low impedance output connection point of the keyboard scan matrix corresponds to a plurality of keys,
When the first key of the plurality of keys is pressed, the scan low impedance connection point of the first thin film circuit board contacts the low impedance output connection point of the second thin film circuit board, and the first of the plurality of scan input lines A thin film switch circuit is provided, wherein a first scan low impedance connection point corresponding to a key and a first low impedance output connection point corresponding to a first key of a plurality of scan output lines are contacted and transmitted. The

According to the present invention,
A plurality of light emitting diodes provided on both side surfaces of the plurality of keys for outputting the first beam and the second beam;
Including a thin film switch circuit and a superposed light guide plate,
Here, the light guide plate is used to change the direction in which the first beam and the second beam are emitted, and the first beam and the second beam are incident on the light guide plate in the first direction and are directed in the second direction. Accordingly, the light emitting module is provided in which the first direction and the thin film switch circuit are parallel, and the first direction and the second direction are perpendicular.

  According to the present invention, a thin film switch circuit provided on a light guide plate is provided.

  According to the present invention, there is provided a light guide plate provided on a thin film switch circuit and having a plurality of apertures in the light guide plate.

  According to the present invention, the pressure sensor includes a plurality of pressure detection members, each pressure detection member having a high impedance detection connection point and a low impedance detection connection point, each key being high impedance when pressed by the first pressure. The detection connection point and the low impedance detection connection point contact each other, and a first contact area is generated between the high impedance detection connection point and the low impedance detection connection point, and the first pressure detection member generates the first impedance value. And when each key is pressed by a second pressure greater than the first pressure, the high impedance detection connection point and the low impedance detection connection point are in contact, and the high impedance detection connection point and the low impedance detection connection point are Each of the pressure sensing members has a first impedance. Pressure sensing circuit, characterized in that to generate a larger second impedance value is provided.

  According to the present invention, the sensor further includes a detection resistor, the detection resistor is grounded and has a detection impedance value, the plurality of pressure detection members are respectively connected in series with the detection resistor, and the pressure detection circuit is connected to the detection impedance value and the first impedance. Alternatively, the haptic intensity voltage is generated based on the second impedance value. Here, when the pressure detection circuit generates the first haptic intensity voltage based on the detected impedance value and the first impedance value, the control unit determines whether the key is pressed by the first pressure, respectively. When the first beam is generated and the pressure detection circuit generates the second force intensity voltage based on the detected impedance value and the second impedance value, the control unit determines whether each key is pressed by the second pressure. A pressure detection circuit is provided that generates a second beam in the light emitting module.

According to the present invention,
A keycap that is exposed and pushed out of the base to generate a signal for each corresponding key;
A shear-type connecting member connected to the key cap, for moving the key cap up and down between a predetermined position and facing the base,
It is provided below the key cap, and when the key cap is pressed and moved downward relative to the base, elasticity is formed, and when the key cap is released, elasticity is added to the key cap, and the key cap is A pressure detection circuit is provided that includes an elastic member that moves upward relative to the elastic member.

  According to the present invention, the first beam is displayed in the first color and the second beam is displayed in the second color.

  According to the present invention, the first beam flashes based on the first frequency, the second beam flashes based on the second frequency, and the first frequency is smaller than the second frequency.

It is the schematic which shows the external appearance of the conventional keyboard. It is an electric circuit diagram which shows the circuit inside the conventional keyboard. 1 is a cross-sectional view of a force sensor type light emitting keyboard according to a preferred embodiment of the present invention. It is sectional drawing which shows the key of the force sensor type light emission keyboard which concerns on preferable embodiment of this invention. FIG. 2 is an electric circuit diagram showing an internal circuit of a force sensor type light emitting keyboard according to a preferred embodiment of the present invention. FIG. 3 is an electric circuit diagram showing a keyboard scan matrix of a force sensor type light emitting keyboard according to a preferred embodiment of the present invention. It is sectional drawing which shows a state when the force sensor type light emission keyboard which concerns on preferable embodiment of this invention is pushed weakly. It is sectional drawing which shows a state when the force sensor type light emission keyboard which concerns on preferable embodiment of this invention is pressed hard. FIG. 3 is an electric circuit diagram showing an internal circuit when a force sensor type light emitting keyboard according to a preferred embodiment of the present invention is strongly pressed. FIG. 5 is a cross-sectional view of a force sensor type light emitting keyboard according to another preferred embodiment of the present invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments described below. A force sensor type light emitting keyboard according to an embodiment of the present invention is shown in a sectional view of a force sensor type light emitting keyboard according to a preferred embodiment of the present invention in FIG. In the present preferred embodiment, the force sensor type light-emitting keyboard 2 includes a base 20, a plurality of keys 21, a thin film switch circuit 22, a light-emitting module 23, and a control unit 24 (see FIG. 5). The plurality of keys 21 are positioned above the base 20, and each key 21 of the plurality of keys 21 is pressed by a certain pressure to output a signal. The thin film switch circuit 22 is positioned between the base 20 and the plurality of keys 21 and provided on the light emitting module 23. The thin film switch circuit 22 further includes a pressure detection circuit 221. The pressure detection circuit 221 includes a plurality of pressure detection circuits 221. The pressure by the key 21 is detected and a haptic intensity voltage is generated. The light emitting module 23 is provided between the base 20 and the plurality of keys 21, and the light emitting module 23 includes a plurality of light emitting diodes 231 (Light Emitter Diodes, LEDs) and a light guide plate 232. Are arranged and arranged on both sides of the key 21 (only two are shown in the figure), and are used to output the first beam B1 (see FIG. 7) and the second beam B2 (see FIG. 8). Further, the light guide plate 232 and the thin film switch circuit 22 are overlapped and positioned below the thin film switch circuit 22, and are used to change the emission directions of the first beam B1 and the second beam B2. Here, the first beam B1 is displayed in the first color, and the second beam B2 is displayed in the second color. In another embodiment, the first beam B1 flashes at a first frequency, the second beam B2 flashes at a second frequency, and the first frequency is less than the second frequency. In a preferred embodiment, the first beam B1 is displayed in a first color (eg blue) and the second beam B2 is displayed in a second color (eg green).

  Here, the structure of the force sensor type light emitting keyboard will be described in detail using one key, and FIG. 4 is a cross-sectional view showing the key of the force sensor type light emitting keyboard according to a preferred embodiment of the present invention. FIG. 4 are a key 21, a thin film switch circuit 22, a light emitting module 23, and a base 20. First, the structure of the key 21 will be described taking the rightmost key 21 of the force sensor type light emitting keyboard 2 as an example. The key 21 includes a key cap 211, a shear-type connection member 212, and an elastic member 213. The key cap 211 is exposed to the outside of the base 20, the key cap 21 is used to generate a signal corresponding to the key 21 when pressed by the user, and the key cap 211 is partially transparent, or , The whole is made of a transparent material and can transmit light. The shear connection member 212 is connected to the key cap 211 and is used to move the key cap 211 up and down relative to the base. The elastic member 213 is provided below the key cap 211, and is used to form elasticity for expanding and contracting when the key cap 211 is moved up and down relative to the base when the key cap 211 is pressed by the user. When the user no longer presses the keycap 11, it is released and elastically moves the keycap 211 upward relative to the base and pushes it back to the position before it was pressed. In a preferred embodiment, the elastic member 213 is formed of rubber.

  In the preferred embodiment, the pressure sensing circuit 221 of the membrane switch circuit 22 includes a plurality of pressure sensing members 2211 and each pressure sensing member corresponds to a key 22. The rightmost key of the force sensor type light emitting keyboard 2 will be described. As shown in FIG. 4, the pressure detection member 2211 corresponding to the rightmost key 21 has a high impedance detection connection point 2211A and a low impedance detection connection point 2211B. In a preferred embodiment, the pressure sensing member 2211 is a pressure sensing resistance (FSR), the high impedance sensing connection point 2211A is formed of graphite, and the low impedance sensing connection point 2211B is made of metal. It is formed. When the key is not pressed by the user, the pressure detection member 2211 has a first impedance value because the high impedance detection connection point 2211A has a high impedance property. When the key is pressed by the user, the high impedance detection connection point 2211A and the low impedance detection connection point 2211B come into contact with each other, the pressure detection member 2211 generates the second impedance value r2 (see FIG. 5), and the second impedance. The value is smaller than the first impedance value. When the light emitting module 23 below the thin film switch circuit 22 is pressed by the key 21, the plurality of light emitting diodes 231 output the first beam B1 or the second beam B2, and the light guide plate 232 is the first beam B1. The emission direction of the second beam B2 is changed.

  As shown in FIGS. 4 and 5, FIG. 5 is an electrical circuit diagram of the inside of a force sensor type light emitting keyboard according to a preferred embodiment of the present invention. The thin film switch circuit 22 further includes a first thin film circuit board 222 and a second thin film circuit board 223 in addition to the pressure detection circuit 211. The second thin film circuit board 223 and the first thin film circuit board are overlapped with each other. The thin film circuit board 222 includes a plurality of scan input lines Col. 1-Col. 18, each scan input line has a scan low impedance connection point 2221, the second thin film circuit board 223 has a plurality of scan output lines Row 1 to Row 8, and each scan output line has a low impedance output connection In the preferred embodiment, the scan low impedance connection point 2221 and the low impedance output connection point are both formed of metal. A plurality of scan output lines Row1 to Row8 and a plurality of scan input lines Col. 1-Col. 18 intersect alternately, and a keyboard scan matrix M corresponding to a plurality of keys 21 is formed. (See Figure 6)

  As shown in FIGS. 5 and 6, the keyboard scan matrix M includes a plurality of scan low-impedance connection points 2221 and a plurality of low-impedance output connection points 2231 at a plurality of key connection points C1, C2, etc. Correspondingly formed. Since the keyboard scan matrix M is 8 × 18, a plurality of scan output lines Row1 to Row8 and a plurality of scan input lines Col. 1-Col. 18 cross alternately and form 144 key connection points. The pressure detection circuit shown in FIG. 5 further includes a detection resistor Ra, the detection resistor Ra has a detection impedance value ra, and each pressure detection member 2211 of the pressure detection circuit 221 is connected in series with the detection resistor Ra, In addition, a haptic strength voltage is generated by the detected impedance value ra and the impedance partial pressure of the pressure detecting member 2211. In FIG. 5, the control unit 24 is connected to the thin film switch circuit 22 and the plurality of light emitting diodes 231 of the light emitting module 23, and is used to determine what the pressed key is. Further, the control unit 24 has a predetermined voltage threshold, and the control unit 24 determines the strength of the pressure applied on the key 22 based on the magnitude relationship between the haptic strength voltage and the voltage threshold, and corresponds to the pressure strength. Then, it is controlled whether the plurality of light emitting diodes 231 output the first beam B1 or the second beam B2.

  For example, the first key 21 among the plurality of keys 21 corresponds to the first key connection point C1, and the first key connection point C1 is the first scan among the plurality of scan output lines Row1 to Row8. Output line Row1 and a plurality of scan input lines Col. 1-Col. 18 in Col. It is formed by alternating with 1. When the user has not yet pressed the first key 21, the pressure detection member 2211 has a first impedance value (the first impedance value and the detection impedance value ra are set to be the same), and thus the pressure detection circuit The first haptic intensity voltage sensed by 221 is half of the high logic voltage, and in a preferred embodiment, the high logic voltage is set to 5 volts and the first key 21 is not depressed. The one-force intensity voltage is 2.5 volts. Further, when the user presses the first key 21, the first scan low impedance connection point 2221 on the first thin film circuit board 222 and the first low impedance output connection point 2231 on the second thin film circuit board 223 come into contact with each other. First scan input line Col. 1 and the first scan output line Row1 are conducted, whereby the control unit 24 transmits the conducted first scan input line Col. 1 and the first scan output line Row 1, it is determined that the key pressed by the user is the first key 21. Further, the situation where the other key connection points of the keyboard scan matrix M are pressed (for example, the situation of the second key connection point C2) is the same as the above-described principle, and therefore further explanation will be omitted here. .

  Furthermore, the situation when the user presses the first key 21 with different pressures shows a state when the force sensor type light emitting keyboard according to the preferred embodiment of the present invention shown in FIGS. 5 and 7 is weakly pressed. A description will be added with reference to the sectional view. In FIG. 4, the first key 21 has not yet been pressed by the user, and the first thin film circuit board 222 and the second thin film circuit board 223 corresponding to the first key 21 have the first scan of the first thin film circuit board 222. The low-impedance connection point 2221 is not in contact with the first low-impedance output connection point 2231 of the second thin film circuit board 223, and the first pressure detection member 2211 corresponding to the first key 21 has its high-impedance detection connection point 2211A. Is not in contact with the low impedance sensing connection point 2211B. When the user presses the first key 21 by the first pressure, the key cap 211 moves the distance from the original position to the first predetermined position D, pushes the elastic member 213, and the elastic member 213 is the first thin film circuit. The first low impedance input connection point 2221 of the first thin film circuit board 222 and the first low impedance output connection point 2231 of the second thin film circuit board 223 are in contact with each other, and the first scan input line Col. 1 and the first scan output line Row1 are conducted. In addition, the high impedance detection connection point 2211A and the low impedance detection connection point 2211B of the first pressure detection member 2211 are in contact with each other, and the first contact is between the high impedance detection connection point 2211A and the low impedance detection connection point 2211B. There is an area A1, and the first pressure detection member 2211 generates a second impedance value r2, which is smaller than the first impedance value.

  As shown in FIG. 5, when the first key 21 is pressed, the first scan output line Row1 and the first scan input line Col. 1 is conducted, a high logic voltage (that is, 5 volts) is obtained, and the sensing resistor Ra is grounded. Therefore, the sensing resistor Ra and the first pressure sensing member 2211 form a voltage dividing circuit, and pressure sensing. The circuit 221 generates the second haptic intensity voltage V2. Here, since the second impedance value r2 is smaller than the first impedance value, the second haptic strength voltage V2 (set to 3 volts) is larger than the first haptic strength voltage. Subsequently, the control unit 24 compares the second haptic intensity voltage V2 with a predetermined voltage threshold (set to 4 volts) and finds that the second haptic intensity voltage V2 is smaller than the voltage threshold, whereby the control unit 24, it is determined that the first pressure when the first key 21 is pressed is a weak pressure, and the control unit 24 controls the plurality of light emitting diodes 231 to output the first beam B1, and a force sensor type light emitting keyboard. 2 displays blue light.

  FIG. 8 is a cross-sectional view showing a state in which a force sensor type light emitting keyboard according to a preferred embodiment of the present invention is strongly pressed, and FIG. 9 is a force sensor type light emission according to a preferred embodiment of the present invention. It is an electric circuit diagram which shows an internal circuit when a keyboard is pushed hard. When the user presses the first key 21 by the second pressure, the key cap 211 similarly moves the distance from the original position to the second predetermined position D ′, pushes the elastic member 213, and the elastic member 213 When the first thin film circuit board 222 is pushed, the first low impedance input connection point 2221 of the first thin film circuit board 222 and the first low impedance output connection point 2231 of the second thin film circuit board 223 come into contact with each other, and the first scan input line Col. . 1 and the first scan output line Row1 are conducted. In addition to this, the high impedance detection connection point 2211A and the low impedance detection connection point 2211B of the first pressure detection member 2211 are in contact, and the second contact is between the high impedance detection connection point 2211A and the low impedance detection connection point 2211B. There is an area A2, and the first pressure detection member 2211 generates a third impedance value r3, which is smaller than the second impedance value r2.

  As shown in FIG. 9, when the first key 21 is pressed, the first scan output line Row1 and the first scan input line Col. 1 is conducted, a high logic voltage (that is, 5 volts) is obtained, and the sensing resistor Ra is grounded. Therefore, the sensing resistor Ra and the first pressure sensing member 2211 form a voltage dividing circuit, and pressure sensing. The second force sense strength voltage V2 is generated in the circuit 221. Here, since the second impedance value r2 is smaller than the first impedance value, the third force sense strength voltage V3 (set to 4.2 volts) is the second force value. It is greater than the perceived intensity voltage (ie 3 volts). Subsequently, the control unit 24 compares the third haptic intensity voltage V3 with a predetermined voltage threshold and finds that the third haptic intensity voltage V3 is greater than the voltage threshold (ie, 4 volts), thereby 24 determines that the second pressure when the first key 21 is pressed is a strong pressure, and the control unit 24 controls the plurality of light emitting diodes 231 to output the second beam B2, and thus a force sensor type light emitting keyboard. 2 displays green light.

  By the way, when the first key 21 is weakly pressed, the first contact area A1 between the high impedance detection connection point and the low impedance detection connection point is relatively small, and the high impedance detection connection point 2211A and the low impedance detection connection point 2211B. Since the conduction strength between them is relatively small, the first pressure detection member 2211 generates a relatively large second impedance value r2. As the second impedance value r2 increases, the divided second force sensation intensity voltage V2 is reduced, so that the control unit 24 compares the second haptic intensity V2 with the magnitude of the voltage threshold. Thus, it is determined whether the pressure at which the first key 21 is pressed is weak or strong. Further, since the voltage threshold value is obtained by repeated experiments, the reliability of the determination criterion for the voltage threshold value is very high. Similarly, when the first key 21 is pressed with a strong pressure, the second contact area A2 between the high impedance detection connection point 2211A and the low impedance detection connection point 2211B is relatively large, and the high impedance detection connection point 2211A and the low impedance detection are low. The conduction strength between the connection points 2211B is relatively high, and therefore the first pressure detection member 2211 generates a relatively small third impedance value r3. As the third impedance value r3 decreases, the voltage is divided and the generated third force sense voltage V3 increases. Therefore, the control unit 24 determines that the pressure to press the first key 21 is a strong pressure.

  As shown in FIG. 7 again, when the plurality of light emitting diodes 231 output the first beam B1, the first beam B1 is guided along the first direction D1 (that is, the horizontal direction parallel to the thin film switch circuit 22). The first beam B1 enters the optical plate 232 and is refracted in the light guide plate 232, thereby changing the traveling direction of the first beam B1, and the first beam B1 is in a second direction D2 perpendicular to the first direction D1 (that is, The first beam B1 is refracted and scattered by the internal structure of the plurality of keys 21, and passes through the key cap 211, thereby leaving the light guide plate 232 along the vertical direction perpendicular to the thin film switch circuit 22. The force sensor type light-emitting keyboard 2 displays blue light. Moreover, since the situation where the plurality of light emitting diodes 231 output the second beam B2 is the same, the description thereof is omitted here.

  In addition to this, another preferred embodiment of the present invention is shown in a cross-sectional view of a force sensor type light emitting keyboard according to another preferred embodiment of the present invention of FIG. In this preferred embodiment, the force sensor type light emitting keyboard 3 includes a base 30, a plurality of keys 31, a thin film switch circuit 32, a light emitting module 33, and a control unit (not shown in the figure). The plurality of keys 31 are positioned above the base 30, and each key 31 of the plurality of keys 31 is pressed with a certain pressure to output a signal. The thin film switch circuit 32 is provided between the base 30 and the plurality of keys 31, and the thin film switch circuit 22 includes a pressure detection circuit 321, which is based on the pressure of pressing the plurality of keys 31. A corresponding haptic intensity voltage is generated. The light emitting module 33 is positioned between the base 30 and the plurality of keys 31, and the light emitting module 33 is provided on the thin film switch circuit 32. The light emitting module 33 includes a plurality of light emitting diodes 331 and a light guide plate 332. The light emitting diodes 331 are respectively arranged and arranged on both sides of the plurality of keys 31 and are used to output a first beam (not shown in the figure) and a second beam (not shown in the figure). The light guide plate 332 and the thin film switch circuit 32 are overlapped and positioned above the thin film switch circuit 32, and are used to change the refraction direction of the first beam and the second beam. The light guide plate 332 has a plurality of apertures 3321, the positions thereof correspond to the plurality of keys 31, and when the plurality of keys 31 are pressed, the plurality of keys 31 are caused to penetrate the corresponding plurality of apertures 3321. Used to trigger the thin film switch circuit 32.

  The difference between the force sensor type light emitting keyboard 3 according to this preferred embodiment and the force sensor type light emitting keyboard 2 according to the above preferred embodiment is the positional relationship between the thin film switch circuit of the pressure detection circuit and the light emitting module. . In the force sensor type light emitting keyboard 2 according to the preferred embodiment, the thin film switch circuit 22 and the light emitting module 23 are all positioned between the base 20 and the plurality of keys 21, and the thin film switch circuit 22 is disposed on the light emitting module 23. It is piled up as shown in FIG. However, in the force sensor type light emitting keyboard 3 according to another preferred embodiment, the thin film switch circuit 32 and the light emitting module 33 are all positioned between the base 30 and the plurality of keys 31, and the light emitting module 33 is the thin film switch circuit 32. Overlaid on top, it looks like Figure 10. The operation state and principle of the force sensor type light-emitting keyboard 3 are similar to those of the above-described preferred embodiment, and thus the description thereof is omitted here.

  As obvious from the above description, the force sensor type light-emitting keyboard of the present invention causes the computer to execute different function commands according to the pressure pressed by the user, and further displays different beams according to the different pressing pressures. That is, the force sensor type light emitting keyboard of the present invention presents a different beam to the user, informs the user which key the user pressed is causing the computer to execute, and allows the user to quickly press the force sensor type keyboard. It will be possible to help familiarize yourself with the operation.

  The above-described embodiments are merely for explaining the technical idea and features of the present invention, and are intended to allow those skilled in the art to understand the contents of the present invention and to carry out the same with the present invention. It is not intended to limit the scope of the claims. Accordingly, improvements or modifications having various similar effects made without departing from the spirit of the present invention shall be included in the following claims.

1, 2, 3 Keyboard 10 General key 11 Number key 12 Function key 13, 24 Control unit 14, M Keyboard scan matrix 20, 30 Base 21, 31 Key 22, 32 Thin film switch circuit 23, 33 Light emitting module 211, 311 key Caps 212 and 312 Shear type connection members 213 and 313 Elastic members 221 and 321 Pressure detection circuits 222 and 223 Thin film circuit boards 231 and 331 Light-emitting diodes 232 and 332 Light guide plate 2211 Pressure detection member 2221 Scan low impedance connection point 2231 Scan low impedance connection Point 3321 Open hole 2211A High impedance detection connection point 2211B Low impedance detection connection point A1, A2 Contact area B1, B2 Beam Col. 1-Col. 18 Scan input lines D, D ′ Predetermined positions D1, D2 directions r2, r3 Impedance value Ra detection resistance ra detection impedance values Row1 to Row8 scan output lines V2, V3 haptic intensity voltage

Claims (9)

A force-sensitive light-emitting keyboard,
Base and
A plurality of keys that are positioned above the base and that are pressed by a certain pressure to output a signal;
A thin film switch circuit provided between the base and the plurality of keys, and having a pressure detection circuit for detecting the corresponding pressure and generating a force intensity voltage;
A light emitting module provided between the base and the plurality of keys for generating a first beam and a second beam;
Connected to the thin-film switch circuit and the light-emitting module, determines the intensity of the pressure based on a haptic intensity voltage, and outputs the first beam and the second beam to the light-emitting module based on the intensity of the pressure A control unit,
Only including,
The pressure detection circuit includes a plurality of pressure detection members, each pressure detection member having a high impedance detection connection point and a low impedance detection connection point, and when each of the keys is pressed by a first pressure, A high impedance detection connection point and the low impedance detection connection point are in contact with each other, and a first contact area is generated between the high impedance detection connection point and the low impedance detection connection point. When the first impedance value is generated and each key is pressed by a second pressure greater than the first pressure, the high impedance detection connection point and the low impedance detection connection point are in contact, and the high impedance detection connection point And the low impedance sensing connection point has a second contact area larger than the first contact area. Becomes Rukoto, each of the pressure sensing member is characterized in that generating the first impedance value is smaller than the second impedance value, the force-sensitive luminescent keyboard. The thin film switch circuit further includes a plurality of scan input lines, each of the scan input lines having a scan low impedance connection point;
Superimposed on the first thin film circuit board and includes a plurality of scan output lines, each of the scan output lines including a second thin film circuit board having a low impedance output connection point;
Here, the plurality of scan output lines form a keyboard scan matrix together with the plurality of scan input lines, and each of the scan low impedance connection points and each of the low impedance output connection points of the keyboard scan matrix are the plurality of scan output lines. Corresponding to the key,
When the first key of the plurality of keys is pressed, the scan low impedance connection point of the first thin film circuit board is in contact with the low impedance output connection point of the second thin film circuit board; and The first scan low impedance connection point corresponding to the first key of the scan input line and the first low impedance output connection point corresponding to the first key of the plurality of scan output lines are in contact with each other and transmitted. The force sensor type light-emitting keyboard according to claim 1. The light emitting module is further provided on both side surfaces of the plurality of keys, and a plurality of light emitting diodes for outputting the first beam and the second beam,
A light guide plate superimposed on the thin film switch circuit,
Here, the light guide plate is used to change a direction in which the first beam and the second beam are emitted, and the first beam and the second beam are incident on the light guide plate in a first direction. , Away from the light guide plate in the second direction,
The force sensor type light-emitting keyboard according to claim 1, wherein the first direction and the thin film switch circuit are parallel, and the first direction and the second direction are perpendicular to each other.   The force sensor type light-emitting keyboard according to claim 3, wherein the thin film switch circuit is provided on the light guide plate.   4. The force sensor type light emitting keyboard according to claim 3, wherein the light guide plate is provided on the thin film switch circuit, and the light guide plate has a plurality of apertures. The pressure detection circuit further includes a detection resistor, the detection resistor is grounded and has a detection impedance value, the plurality of pressure detection members are each connected in series with the detection resistor, and the pressure detection circuit is connected to the detection impedance. wherein the values first or, based on the second impedance value, to generate the force sense strength voltage, wherein, based on the pressure detection circuit is the detection impedance value between the first impedance value, the first force sense When generating the intensity voltage, each of the control units determines whether the key is pressed by the first pressure, generates the first beam in the light emitting module, and the pressure detection circuit detects the detected impedance value. When generating a second haptic intensity voltage based on the second impedance value, the control unit respectively It determines whether the key is pressed by the second pressure, and wherein the generating the second beam to the light emitting module, force-sensitive luminescent keyboard according to claim 1. Each said key further
A keycap that is exposed and pushed out of the base to generate the signal of the corresponding key;
A shear-type connecting member connected to the key cap, for moving the key cap up and down between a predetermined position and facing the base,
Provided below the key cap, the elastic is formed when the key cap is pressed and moved downward relative to the base, and the elasticity is added to the key cap when the key cap is released. An elastic member for moving the key cap upward relative to the base;
The force-sensing light-emitting keyboard according to claim 1, comprising:   The force sensor type light-emitting keyboard according to claim 1, wherein the first beam is displayed in a first color, and the second beam is displayed in a second color.   The force sense according to claim 1, wherein the first beam flashes based on a first frequency, the second beam flashes based on a second frequency, and the first frequency is smaller than the second frequency. Sensor-type luminous keyboard.

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